diff --git a/etcd3gw/tests/test_client.py b/etcd3gw/tests/test_client.py
index 9b0a145..d4bfc5c 100644
--- a/etcd3gw/tests/test_client.py
+++ b/etcd3gw/tests/test_client.py
@@ -10,7 +10,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 
 from etcd3gw.client import Etcd3Client
 from etcd3gw.exceptions import Etcd3Exception
diff --git a/test-requirements.txt b/test-requirements.txt
index f1c34d3..26be395 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -13,5 +13,4 @@ testtools>=1.4.0 # MIT
 pifpaf>=0.10.0 # Apache-2.0
 nose>=1.3.7  # GNU LGPL
 pytest>=3.0.0  # MIT
-mock>=2.0.0 # BSD
 urllib3>=1.15.1  # MIT